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Clouds are heavy. Clouds are a form of stored water, surfing the warm low pressure rising from the Earth's surface, if it weren't for the low pressure constantly rising above the denser high pressure, the clouds would naturally sink to the ground. This is what happens of foggy mornings, where there isn't sufficient low pressure to keep the clouds afloat. ...

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I believe it had been raining before. The water had gone to the soil, but the moment you took that picture, it was already evaporating. The air was filling with such water coming from the soil, but air can hold only a limited quantity of gas water, so no more water could be in the form of gas (at so called "point of saturation"). Thus, it changed ...

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This might be the answer you are looking for, but I made some mistake (the result seems unreal, please comment to tell me the wrong part. I just wanted to show the direction that may be correct): By the equation for pressure lapse: $$P=P_0\cdot e^{-\frac{z}{H}}$$ where $H=8 km=8000 m$ (scale height) and $z$ is the height above the surface. We differentiate ...

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Clouds don't really form in a fully stable atmosphere, so the distinction between "stable" and "unstable" is not real here. An approaching warm front in particular offers many types of clouds, and among other types one may well see high-altitude cirrus, cirrocumulus and cirrostratus clouds appearing together. Beach weather approaching ... ...

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